<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
		<script type="text/javascript">
			var name = "lisi";
			var age;
			age = 20;
			alert(name);
			var price = 18.8;
			alert(price);
		</script>
	</head>
	<body>
	</body>
</html>
